/*
 * Copyright 2025 The Kubernetes Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

export function isValidNamespaceFormat(namespace: string) {
  // We allow empty strings just because that's the default value in our case.
  if (!namespace) {
    return true;
  }

  // Validates that the namespace is a valid DNS-1123 label and returns a boolean.
  // https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#dns-label-names
  const regex = new RegExp('^[a-z0-9]([-a-z0-9]*[a-z0-9])?$');
  return regex.test(namespace);
}

export function isValidClusterNameFormat(name: string) {
  // We allow empty isValidClusterNameFormat just because that's the default value in our case.
  if (!name) {
    return true;
  }

  // Validates that the namespace is a valid DNS-1123 label and returns a boolean.
  // https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#dns-label-names
  const regex = new RegExp('^[a-z0-9]([-a-z0-9]*[a-z0-9])?$');
  return regex.test(name);
}
